package com.codeblock;

public class A1 {

	
	public A1(){
		System.out.println("无参构造器");
	}
	static{
		
		
		System.out.println("static{ }  在类加载  加载一次");
		new A1();
	}

	{
		
		System.out.println("{ }代码块");
	}

	public static void main(String[] args) {
		
		
		
		
		
		System.out.println("main");
	}
	
	
	
}
